小弟做出结果如下面所示
Cross-
Method Statistic Prob.** sections Obs
Null: Unit root (assumes common unit root process)
Levin, Lin & Chu t* -2.670474679563508 0.003787204203011702 31 271
Null: Unit root (assumes individual unit root process)
Im, Pesaran and Shin W-stat -0.3473760607733813 0.3641544078193404 31 271
ADF - Fisher Chi-square 68.20197929552866 0.2746436632557297 31 271
PP - Fisher Chi-square 69.50946622775612 0.2393943580575837 31 279
请问看哪个系数才能确定有无单位根?谢谢